Avril Lavigne’s Ex Deryck Whibley Pneumonia Scare

Yikes! Sum 41 rocker Deryck Whibley — who was until recently the ying to Avril Lavigne’s yang — has been hospitalized Down Under following a frightening battle with pneumonia.

The singer fell ill on the Australian leg of the band’s tour and is currently receiving treatment in Sydney, prompting the group to postpone a number of scheduled concerts, according to a statement posted on Sum 41’s website Wednesday.

“We regret to inform everyone that we have had to cancel a few shows due to Deryck Whibley being hospitalised with severe pneumonia. Deryck is currently being treated in a Sydney hospital. Doctors are doing their best to beat the pneumonia and Deryck will remain in Sydney until he has recovered.”

Whibley was hospitalised in August after he suffered a slipped disc and other injuries in a bar brawl in Japan.